JP2505668Y2 - Cleaning device for adhesive application nozzle - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a cleaning device for an adhesive application nozzle that cleans the adhesive adhered to the adhesive application nozzle.

[Conventional technology]

As shown in FIG. 5, for example, windshields of automobiles
When a high-viscosity liquid such as a one-component polyurethane adhesive 21 is applied to the adhesive 22, the adhesive 21 adheres to the application nozzle 7 at the end of the application as shown in the figure. That is, the adhesive application side cutout 15 for discharging the adhesive is formed on one side surface of the tip end portion of the application nozzle 7, but the adhesive application side cutout is formed after the adhesive application. Application nozzle 7 on the opposite side of notch 15
The adhesive 21 is attached around the outer circumference of the tip of the. If you leave the adhered adhesive 21 as it is without cleaning it, the adhesive 21
Adheres to the application nozzle 7 and causes the side notch 15 for adhesive application to be clogged, and changes the beat formation of the adhesive 21 to make smooth application difficult. In order to prevent this problem, various types of cleaning devices for adhesive coating nozzles have been conventionally used. JP-A-64-18466 shows an example thereof. What is described in JP-A-64-18466 is that the recessed portions of a pair of open / close arms arranged opposite to each other are brought into contact with the outer peripheral surface of the coating nozzle to lightly clamp the coating nozzle, and in that state. The coating nozzle is moved to scrape off the adhesive attached to the outer periphery of the coating nozzle, and the scraped adhesive is scraped off by a scraping plate and blown off with compressed air.

[Problems to be solved by the device]

Although the coating nozzle is cleaned by the above conventional technique, the following problems occur.

Since the adhesive adhered to the coating nozzle is solidified to some extent, when the coating nozzle held by the recessed portion of the opening / closing arm is pulled up and moved, a load is applied to the coating nozzle and the cleaning device holding the coating nozzle, and This adversely affects each part, and smooth and high-precision adhesive application cannot be performed.

The present invention solves the above problems, and can completely remove the adhesive adhering to the coating nozzle, does not load the coating nozzle and the like, maintains the accuracy of the device, and is relatively simple. An object of the present invention is to provide a cleaning device for an adhesive application nozzle formed of a structure.

[Means for solving the problem]

SUMMARY OF THE INVENTION In order to solve the above problems, the present invention provides an adhesive application side for rotatably and movably held in a desired direction by an automatic device such as a robot and for discharging an adhesive at the tip thereof. In an adhesive application nozzle cleaning device for removing and cleaning paint adhered to an application nozzle formed with a notch, a drive source mounted on a base and rotating a rotary shaft at high speed, A brush that is slidably fixed and has a cotton-like member made of synthetic resin planted in a spiral shape along the axis of the rotating shaft; and a brush that covers the rotating shaft and the brush and is held on the base. And a case for preventing the scattering of the adhesive, which is formed by forming an opening through which the adhesive coating nozzle can move in and out, the adhesive coating nozzle bringing the coating nozzle into contact with the brush. For applying the adhesive by Square notches rotates within a range that does not come into contact with the brush, and is obtained by constituting the cleaning apparatus of the adhesive application nozzle is to move along the brush.

[Action]

According to the present invention, the coating nozzle is inserted through the opening of the case, and the tip of the coating nozzle is brought into contact with the outer periphery of the brush mounted on the rotating shaft. While the brush is rotated by the drive source, the application nozzle is rotated by an automatic device such as a robot only within the range excluding the side cutout for adhesive application, and at the same time the application nozzle is moved along the outer circumference of the spiral brush. Let As a result, the adhesive material attached to the application nozzle is removed. The removed adhesive is blown outward by centrifugal force, but scattering is prevented by the case that covers the brush and the like. On the other hand, after the removing operation, the adhesive remaining on the brush is dried by the dry air supply means to prevent the adhesive from being reattached to the coating nozzle. Since the dried adhesive is appropriately removed from the brush, the brush can be used for a long time.

〔Example〕

 An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a side sectional view showing the overall structure of the cleaning device of this embodiment, FIG. 2 is a sectional view taken along the line II-II of FIG. 1, and FIG. 3 is a side view for explaining the cleaning operation of this embodiment. Figure, Figure 4 (a),
Similarly, FIG. 5B is a front view for explaining the cleaning operation of the present embodiment, and FIG. 5 is a partially enlarged front view showing the adhesion state of the adhesive application nozzle at the time of application to the windshield of an automobile. .

As shown in FIG. 1, a cleaning device 1 for the adhesive application nozzle.
Is composed of a motor 3 which is a drive source placed on a motor mounting bracket 19 of the base 2, a brush 4, a case 5 and the like, and a dry air supply means 6 is attached if necessary. Further, an adhesive application device 8 having the application nozzle 7 arranged at the tip is connected to an automatic device 9 such as a robot. Also,
The dry air supply means 6 is connected to the dry air supply source 10.

The motor 3 is fixed on the base 2 slightly obliquely, and is arranged with the end of the elongated rotary shaft 11 facing upward. Rotating shaft 11
Is rotated at high speed by the motor 3.

As shown in FIG. 2, the brush 4 is formed by arranging several other cotton-like members 12 made of polypropylene radially on the rotating shaft 11 and spirally along the axis thereof. The brush 4 is supported by the rotary shaft 11 so as to rotate together with the rotary shaft 11, and is formed so as to be slidably supported along the axis of the rotary shaft 11.

The case 5 has a box shape and is made of an acrylic material. The case 5 is supported on the lower surface side by the support bracket 20 of the base 2, and the opening 13 and the opening 13 are provided on one side surface thereof.
A plate-like member 14 is provided to close the lower part of the. Also,
The other side surface of the case 5 is inserted into and held by the motor 3.
Since the case 5 is formed of a box as described above, the case 5 is arranged so as to cover the rotary shaft 11 and the brush 4.

The adhesive application device 8 can be freely moved in and out of the case 13 through the opening 13.
As described above, the tip is provided with the coating nozzle 7 and is connected to the automatic device 9 to be automatically operated. As shown in FIG. 3, the application nozzle 7 is provided with an adhesive application side cutout 15 for ejecting the adhesive, and the adhesive is ejected. Further, the coating nozzle 7 is controlled by an automatic device 9 so as to be rotatable by an arbitrary rotation angle. Further, the adhesive application device 8 is automatically operated by the automatic device 9 to be inserted / removed into / from the opening portion 13 and automatically controlled so as to be movable in a desired direction.

A through hole 16 into which a rubber bush 17 is fitted in the plate member 14
Is drilled. The nozzle 18 of the dry air supply means 6 is inserted into the rubber bush 17. The tip opening of the nozzle 18 protruding into the case 5 is arranged facing the outer peripheral side of the brush 4. Further, as described above, the dry air supply means 6 communicates with the dry air supply source 10 and is formed so as to eject the dry air into the case 5.

 Next, the operation of this embodiment will be described in more detail.

As shown in FIG. 5, an adhesive material 21 made of one-component polyurethane is adhered to the tip of the application nozzle 7 where the adhesive application operation is completed. The adhesive applying device 8 is automatically operated by the automatic device 9 and is inserted into the case through the opening 13 of the case 5. The tip of the coating nozzle 7 is arranged to be in contact with the outer periphery of the brush 4 while being slightly inclined with respect to the brush 4. The motor 3 is operated to rotate the rotating shaft 11 and the brush 4 fixed to the rotating shaft 11 at high speed.

FIG. 3 shows the contact state between the coating nozzle 7 and the brush 4, and the line AA is a virtual line connecting the outer circumferences of the spiral brush 4, and the coating nozzle 7 is inclined as described above. The tip of the lever is placed in abutting engagement with the line AA.

The coating nozzle 7 is rotated by an automatic device 9. The rotation angle of the coating nozzle 7 is such that the brush 4 is placed in the side notch 15 for adhesive application as shown in FIGS. 3 and 4 (a) and (b). It is installed within the range where it does not contact. That is, from the state shown on the left side of FIG. 3 (state of FIG. 4 (a)) to the state shown on the right side of FIG. 3 (state of FIG. 4) (b), the coating nozzle 7 Rotates. At the same time, the coating nozzle 7 moves on the brush 4 along the line AA. With the above-described rotation and movement of the coating nozzle 7, the adhesive 21 attached to the coating nozzle 7 is scraped off by the brush 4 made of the cotton-like member 12 made of polypropylene. The scraped off adhesive 21 is repelled by the action of the centrifugal force of the brush 4 rotating at high speed,
It collides with the inner surface of the case 5, falls, and collects on the bottom surface of the case 5. When the coating nozzle 7 is moved in the direction of the line AA, since the brush 4 is slidably supported by the rotating shaft 11, no unreasonable force acts on the coating nozzle 7 and the brush 4.
The adhesive 21 will be removed. The above operation is completed, and the dry air supply means 6 is operated with the rotation of the brush 4 stopped. The adhesive 15 slightly attached to the outer periphery of the brush 4 is dried with dry air. The adhesive 15 is dried in order to prevent the adhesive adhered to the brush 4 from re-adhering to the coating nozzle 7. The adhesive which is adhered to the brush 4 and dried is dropped and removed when the above operation is repeated. Therefore, the brush 4 can be reused without lowering its function.

[Effect of device]

 The present invention has the following effects.

a) The adhesive attached to the tip of the application nozzle is reliably prevented by rotating and moving while bringing the tip of the application nozzle into contact with the brush made of synthetic resin. The adhesive is scraped off by a brush that rotates at a high speed, and an unreasonable force does not act on the application nozzle or the like. Therefore, the accuracy of the coating nozzle or the like is not adversely affected.

b) Since the adhesive is scraped off by the cotton-like members that are intermittently connected in a spiral shape, the adhesive can be removed without difficulty, and the adhesive is finely dispersed and reliably removed. It

c) Since the case for covering the brush and the like is arranged, the removed adhesive hits the inner wall of the case, falls, and is deposited at a predetermined place. As a result, scattering of the adhesive to the outside is prevented and the accumulated adhesive is easily discharged.

d) The present invention comprises a drive source, a rotary shaft, a spiral brush, etc., and has a simple structure and can be implemented at a relatively low cost.

[Brief description of drawings]

1 is a side sectional view showing the overall structure of an embodiment of the present invention, FIG. 2 is a sectional view taken along the line II-II of FIG. 1, and FIG. 3 is a view for explaining the operation of this embodiment. Side view, FIG. 4 (a),
FIG. 5B is a front view for explaining the operation of the present embodiment, and FIG. 5 is a partially enlarged front view showing the adhesion state of the adhesive when the windshield of an automobile is applied. 1 ... Cleaning device, 2 ... Base 3 ... Motor, 4 ... Brush 5 ... Case 6 ... Dry air supply means 7 ... Application nozzle, 8 ... Adhesive application device 9 ... Automatic device, 10 …… Dry air supply source 11 …… Rotary shaft, 12 …… Cotton-like agent 13 …… Opening, 14 …… Plate-like member 15 …… Side notch for adhesive application 16 …… Through hole, 17 …… Rubber bush 18 …… Nozzle 19 …… Motor mounting bracket 20 …… Support bracket 21 …… Adhesive

Claims (2)

(57) [Scope of utility model registration request] 1. A rotatable device such as a robot,
And an adhesive coating for removing and cleaning the paint adhering to the coating nozzle, which is movably held in the desired direction and has a side notch for adhesive coating for discharging the adhesive at its tip. In a nozzle cleaning device, a drive source that is placed on a base and that rotates a rotating shaft at a high speed, and a cotton-like member made of synthetic resin that is slidably fixed to the rotating shaft are provided along the axis of the rotating shaft. And a brush formed by spirally planting it, and an adhesive scattering prevention formed by covering the rotating shaft and the brush and holding the base on the base, and forming an opening through which the adhesive application nozzle can go in and out. A case for the adhesive application nozzle, the application nozzle is brought into contact with the brush, the side cutout for adhesive application is rotated by the automatic device or the like in a range not contacting the brush, And move along the brush A cleaning device for an adhesive application nozzle, characterized in that it is a thing. 2. A cleaning device for an adhesive application nozzle according to claim 1, wherein a dry air supply means for drying the adhesive adhered to the brush is detachably attached to the case.